Highlights

Please wait a minute...
  • Select all
    |
  • Theoretical Frontiers
    GU Chaolin, CHEN Lelin, GU Jiang, GAO Zhe, SU Hefang, GUO Li
    South China Geographical Journal. 2023, 1(2): 1-14. https://doi.org/10.20125/j.2097-2245.202302001

    Rapid urbanization and climate change are rapidly changing earth and the earth systems. This paper explores the new tasks and new frontiers of Chinese geography from the perspective of the Anthropocene. As a crucial discipline within earth sciences, geography spans the natural and social sciences and is poised to become the most promising field in the era of Anthropocene. It is a new mission of geography to define the spatiotemporal structure of anthroposphere, rebuild the framework of the human-environment relationships, conduct research on topology of the human geography, return to research on sustainable development based on the unified geography. Human geography, as the most important branch of geography, will be reshaped for rapid world urbanization, climate change and sustainable issues. For historical geography, it needs to pay greater attention to the impact of human activities, such as the history of prehistoric marine civilization and continental civilization, as well as the history of the modern environmental pollution. For economic geography, it could be on finance-trade-globalization, global value chains-global production chains-global industrial chains, of course the "global South"will be becoming a hot spot and of focus. Due to the collectivization of western countries centered on the United States, the trend of deglobalization and the increasing risk of the new cold war, political geography is in urgent development need. It could be shifting from geopolitics to global governance, rebuilt an effective global institution for cooperation that belong fields of unconventional and new energy technologies. For social geography, it would prioritize social issues on the global perspective, especially as rapid world urbanization and global climate change have inequalities of race, gender, class and some other social groups. Information technology and the Internet have given Cultural Geography new connotations and new opportunities for development. It is necessary to pay special attention to the significance of human beings' use of various words and semiotics tools to the planet and its place where human being live, and explore more effective countermeasures to intervene in rapid earth change. In response to the accelerated processes of urbanization, climate and earth changes, Urban Geography should swiftly transition from a traditional framework focused on "urbanization-urban systems-internal urban structures" to a new framework focusing on modernization based on green growth. It is very likely that Anthropocene geography will give geographers some new disciplines to develop imaginary fields, such as deep sea and deep space exploration, planetary geography, interstellar colonization and migration.

  • Application Studies
    DING Dan, LIU Xiaoping, XU Xiaocong
    South China Geographical Journal. 2023, 1(2): 39-50. https://doi.org/10.20125/j.2097-2245.202302004

    With the acceleration of urbanization, urban expansion gradually tends to develop medium and high-rise buildings in the vertical direction from low-density development in the horizontal direction. It is very important to establish a dynamic three-dimensional model for simulating urban expansion to correctly explore the evolution process of urban three-dimensional space. However, the current model research on 3D urban expansion is very limited, and some of the existing 3D model studies still use the 2D land use area as the demand constraint condition, which is inconsistent with the actual 3D expansion simulation idea. Based on the above background, this paper takes Shenzhen as the research object, and proposes a 3D urban expansion simulation model mining the transformation rules that combine horizontal expansion and vertical growth,which is based on the two-dimensional FLUS model and the building mass in different shared socioeconomic paths (SSPs) scenarios as the constrained demand. It solves the problem of separation of horizontal and vertical simulation processes in previous studies. The research shows that in the simulation of urban land in the horizontal direction, the FoM index is 0.34, the Kappa coefficient is 0.887 9, and the overall accuracy is 95.14%. The relative error of each building volume in the vertical direction is less than or equal to 10%, and the fitting error is low. Moreover, the 3D-FLUS model predicts the three-dimensional urban expansion results of Shenzhen under different SSP scenarios in the future, which is of great significance for future urban planning.

  • Theoretical Frontiers
    QIN Kun, ZHOU Yang, HUANG Jing, LIU Juan, YU Xuesong, GAO Muhan, LIU Donghai, GAO Xieqing
    South China Geographical Journal. 2023, 1(1): 36-50. https://doi.org/10.20125/j.2097-2245.202301004

    Earth System Model (ESM) is a set of important tools to understand the mechanism of historical climate change and environment evolution, to forecast the future potential global change, and it is an important platform to integrate related researches about geosciences. The research object of geographic information science is developing from the traditional earth surface to the entire earth system. This paper summarizes and analyzes the theories and key technologies of the earth system model from the perspective of geographic information science. It includes basic concepts of the earth system model and their component relationships, the key technologies of the earth system model (including numerical model and solving methods, parametrization methods, high performance parallel computation methods, data storage methods for mass data, and so on), critical data of the earth system model (including the reanalysis data from the United States, Europe, Japan, and China), and the forecast methods of the earth system model (including ensemble forecast, multiscale forecast, intelligent forecast, high spatiotemporal resolution forecast). Finally, the paper prospects the future development trend and application prospect of the earth system model research.